Exhibit 99.18 MBNA MASTER CREDIT CARD TRUST II SERIES 1996-H KEY PERFORMANCE FACTORS DECEMBER, 1997 Expected B Maturity 09/17/01 Blended Coupon 6.0253% Excess Protection Level 3 Month Average 5.19% December, 1997 5.38% November, 1997 4.81% October, 1997 5.37% Cash Yield 18.28% Investor Charge Offs 4.64% Base Rate 8.26% Over 35 Day Delinquency 4.81% Seller's Interest 16.15% Total Payment Rate 13.29% Total Principal Balance $ 34,934,847,924.76 Investor Participation Amount $ 1,200,000,000.00 Seller Participation Amount $ 5,643,513,406.27